H8S2117R Datasheet, PDF (209/1024 Pages) Renesas Technology Corp – 16-Bit Single-Chip Microcomputer H8S Family / H8S/2100 Series

Section 7 I/O Ports
(5) PG3/SCL2/ExIRQ11
The pin function is switched as shown below according to the combination of the register setting
of the IIC and the PG3DDR bit. When the ISS11 bit in ISSR16 is set to 1 and the IRQ11E bit in
IER16 of the interrupt controller is set to 1, this pin can be used as the ExIRQ11 input pin.
Setting
Module
Name
Pin Function
IIC
SCL2_OE
I/O Port
PG3DDR
IIC
SCL2 input/output 1

I/O port
PG3 output
0
1
PG3 input
0
0
(initial setting)
Note: The output format for SCL2 is NMOS output only, and direct bus drive is possible. When
this pin is used as the PG3 output pin, the output format is NMOS push-pull.
(6) PG2/SDA2/ExIRQ10
The pin function is switched as shown below according to the combination of the register setting
of the IIC and the PG2DDR bit. When the ISS10 bit in ISSR16 is set to 1 and the IRQ10E bit in
IER16 of the interrupt controller is set to 1, this pin can be used as the ExIRQ10 input pin.
Setting
Module
Name
Pin Function
IIC
SDA2_OE
I/O Port
PG2DDR
IIC
SDA2 input/output 1

I/O port
PG2 output
0
1
PG2 input
0
0
(initial setting)
Note: The output format for SDA2 is NMOS output only, and direct bus drive is possible. When
this pin is used as the PG2 output pin, the output format is NMOS push-pull.
Rev. 1.00 Apr. 28, 2008 Page 183 of 994
REJ09B0452-0100